Spectacles.



J. H'. MONROE.

SPEGTAGLES. APPLICATION-FILED mm: i0, 1907.

Patented Jan. 17,1911.

[W13 Janna/7 mus Pirlns c JAMES HENRY MONROE, OF SANTA CRUZ, CALIFORNIA.

SPECTAGLES.

Application filed June 10, 1907.

To all whom it may concern:

Be it known that 1, JAMES HENRY MON- non, a citizen of the UnitedStates, residing at Santa Cruz, in the county of Santa Cruz and State ofCalifornia, have invented certain new and useful Improvements inSpectacles, of which the following is a specification.

My invention relates to improvements in eye-glasses, its object being toprovide improved means for securing the stud to the nose bow and lenses,so that the parts may not work loose.

T 0 this end my invention consists of the features of construction andcombination hereinafter particularly described and claimed.

In the accompanying drawings forming part of this specification, Figurel is a front View of one lens and the adjacent portion of the stud,embodying my improvements; Fig. 2 is a similar view showing the lenspartly broken away, and the stud in section; Fig. 3 is an inner end viewof Fig. l; and Fig. 4 is a section on line 00U of Fig. 2.

In the drawings A represents one of the lenses, B the stud and C thebridge or bow. The stud is formed with the usual yoke 2 to receive thelens. Extending through the yoke-arms, and the interposed lens, as shownin Fig. t, is an exteriorly threaded female screw 3 formed in its innerend with a threaded opening to receive the male screw 4, which ispreferably threaded oppositely to the exterior threads of the femalescrew.

The stud is secured to the bow by means of an exteriorly threaded femalescrew 5 extend.- ing through the bow and longitudinally through theshank 6 of the stud. The inner end of this screw is formed with athreaded opening into which is fitted a male screw 7. The screws 5 and 7are oppositely threaded, and the screw 7 has its head countersunk toallow the lens to fit snugly in the stud.

As is best illustrated in Fig. 4, the lens is thickened at its edgewhere it passes be- Specification of Letters Patent.

Patented Jan. 17, 1911. Serial No. 378,139.

tween the jaws 2 and the aws are so shaped as to accommodate thisthickened portion. The piercing of the lens for the passage of thescrews 3 and 4 so weakens the lenses that they tend to easily crack atthis point. By thickening the edge of the lens, as shown, movement ofthe lens between the jaws is more effectually prevented, and thetendency to breakage reduced.

In the ordinary construction of eye glasses the stud and glass screwsoften work loose by unscrewing; and as they have only the retainingstrength of the few intermeshing threads, they easily break loose. In myconstruction it is impossible for the female screws to work loose untilthe male screws are entirely removed, and with the stud screws there isthe additional safeguard that they cannot work loose until the lensscrews also are removed.

hile I have shown my invention applied to eye glasses of pince-nez typeit will be apparent that it may equally well be applied to any kind ofeye glasses or spectacles where the glasses are secured to the stud byscrews.

I claim:

A lens holding device for eye glasses comprising a stud, integral armscarried by said stud, a lens, removable means fastening the lens betweensaid arms, a bow supporting portion of said stud, a bow, an exteriorlythreaded female screw for clamping said how to the bow supportingportion of said stud, the internal and external threads of said screwbeing relatively different and a male screw fitting into said femalescrew and locked in place by the adjacent edge of said lens, wherebysaid intermeshing screws cannot be removed without the preliminaryremoval of said lens.

In testimony whereof I afiix my signature in presence of two witnesses.

J AMES HENRY MONROE. Witnesses:

JOHN A. WILLIAMS, HENRY Rnnnv.

